Steel sheet piling of z-shaped sheet piling iron



June 12, 1934. M, METZLER 1,962,830

STEEL SHEET FILING OF Z-SHAPED SHEET FILING IRON Filed May 14, 1931 /nvenfor:

Patented June 12, 1934 STEEL SHEET PILING F Z-SHAPED SHEET PILING IRONMartin Metzler, Dortmund-Gartenstadt,

Ger-

many, assignor to the firm Vereinigte Stahlwerke Aktiengesellschaft,Dusseldorf, Germany Application May 14, 1931, Serial No. 537,465

In Germany 1 Claim.

The invention relates to an improvement in steel sheet pilings.

The steel sheet pilings of U and Z-shaped sheet piling iron as they areknown to-day, employ webs which are positioned in an obtuse or acuteangle or vertically to the flanges limiting them in the width. Usingthat method only an incomplete static utilization of the cross sectionis attained, because the flanges add the greatest part to the moment ofresistance.

According to the invention sheet piling irons consisting of outer web orflange like portions and connecting webs, such as Z-irons, are used inwhich the outer web like portions extending substantially parallel tothe plane of the piling are prolonged at both sides of the axis of thepiling to a desired extent beyond the connecting webs which extendsubstantially vertically to the axis of the piling. Due to thiselongation of the outer web portion a more efiicient utilization of thematerial is obtained. It may be remarked that by characterizing theouter web like portions as extending substantially parallel to the planeof the piling and the connecting webs as extending substantiallyvertically to the axis of the piling, it is not intended to strictlydefine the invention to this position but thereby only the approximateposition of said parts shall be referred to for the purpose of makingclear the spirit of my invention.

The invention is more clearly described by way of example in theaccompanying drawing, the figure of which shows a cross-section of asheet May 15, 1930 piling which is formed of Z-shaped sheet irons whichare constructed according to the invention.

In the figure the single Z-shaped irons which are connected by means ofinterlocking joints d consist of the outer webs or flanges a which areparallel to the plane or axis of the wall, and the connecting webs bwhich lie vertically to the axis of the piling. The outer webs a areelongated beyond the connecting webs I) over a length 0 which may be asdesired and depends only on the static requirements. For example theelongated parts of the adjacent sheet irons may touch in extreme cases.However, it is an important fact that in the latter case the elongationsor protruding parts are not provided with interlocking joints. It is notnecessary that the protruding webs or flanges of a sheet piling iron aresymmetrical. The sheet piling iron may be rolled out of one piece or settogether in any desired manner as for instance by welding. There mayalso be used any well known interlocking joints and the connections maybe produced by means of intermediate parts.

What I claim and desire to secure by Letters Patent of the United Statesis:

Corrugated sheet piling composed of rectangular Z-irons connected byinterlocking joints, the webs thereof extending parallel to the plane ofthe piling being prolonged at both sidesof the axis of the piling beyondthe webs extending vertically thereto.

MARTIN METZLER.

